Anthropic Outage History

Anthropic Claude 4 Sonnet experienced a brief degraded performance beginning at 6:05 AM UTC and was restored by 8:38 AM UTC. The issue affected three components—claude.ai, api.anthropic.com, and Claude Code—causing elevated error rates during the incident. The Claude status page showed a degraded state before returning to normal as service was restored, with two official updates issued during the incident.

Anthropic Claude experienced a brief outage affecting access to claude.ai. Users attempting to reach Claude AI encountered connectivity problems for about 54 minutes, starting at 1:53 AM UTC and ending at 2:47 AM UTC. The claude.ai component was degraded during this period, before returning to normal operation.

The provider issued two status updates during the incident, noting an ongoing investigation and eventual restoration of service.

The Claude.ai login flow and the Anthropic Console were unavailable for users around the globe starting at 9:36 PM UTC. The main outage persisted for about 1 hour and 37 minutes, with login and console access broken for Claude.ai across regions. The Anthropic API was not affected during the primary incident, and services began to recover with Claude.ai back online by 11:13 PM UTC as monitoring continued.

The provider issued multiple status updates detailing investigations, fixes, and ongoing monitoring. The incident appears to have had global reach, with reports from users across multiple regions.

Anthropic Claude Opus 4 experienced a brief degraded performance, with elevated errors across api.anthropic.com, claude.ai, and console.anthropic.com. Users attempting Claude operations may have encountered failed API calls, slower responses, or access issues. The degradation lasted about 20 minutes and affected multiple entry points to Claude Opus 4. Status updates indicated the issue began around 12:08 AM UTC and the services were restored by 12:28 AM UTC. The Claude status page showed an initial investigation and a subsequent restoration, with 2 official updates issued during the event.

Anthropic Claude experienced a brief degraded performance affecting Claude 3.7 Sonnet requests. Users attempting to access api.anthropic.com and claude.ai reported errors beginning around 1:09 PM UTC, with an update at 1:13 PM UTC noting elevated errors while engineers investigated.

The Claude Sonnet API (api.anthropic.com) experienced a brief degradation with elevated errors on requests, potentially affecting AI interactions for a short period. The provider documented an investigation and status updates during the incident.

The outage began at 10:03 AM UTC and was resolved by 10:18 AM UTC, lasting about 15 minutes. The issue affected a single component and user reporting was limited during the event, with service returning to normal after the final update.

Anthropic Claude 3.5 Haiku experienced a brief degraded performance affecting claude.ai, Claude Code, and api.anthropic.com. Users attempting to use Claude endpoints may have encountered errors or slower responses during the incident. The issue began at 1:33 PM UTC and was resolved by 2:28 PM UTC, lasting roughly 55 minutes. The incident prompted two status updates on Claude's status page and affected three core components: claude.ai, Claude Code, and api.anthropic.com.

The status page communications indicated an initial investigation with elevated errors, followed by confirmation of restoration. The incident consisted of a minor disruption with two official updates.

Anthropic Claude experienced a brief period of elevated errors affecting Claude 4 Sonnet and Claude 3.6 Sonnet, with Claude Code included in the service set. This caused degraded responses and intermittent failures for users during the window. The issue began around 1:55 PM UTC with elevated error rates, and the status page indicated an investigation starting at Jul 3, 2025 2:13 PM UTC.

The provider issued 2 status updates during the incident. By 2:43 PM UTC, services were restored and all affected components (claude.ai, api.anthropic.com, and Claude Code) returned to normal. The outage lasted from 1:55 PM UTC to 2:43 PM UTC, roughly 48 minutes.

Anthropic Claude 4 Opus experienced degraded performance with elevated errors across Claude.ai, the API at api.anthropic.com, and Claude Code. The issue began at 6:47 AM UTC and prompted an initial status update at 7:08 AM UTC as investigators worked to identify the cause.

The Claude status page issued two updates during the incident, and services were restored by 10:48 AM UTC, for an outage duration of about {{time:4 hours 1 minute}}. Users experienced errors and degraded performance across Claude.ai and related services, with a relatively small volume of reports reflecting the disruption.

Anthropic Claude Sonnet and Opus 4 endpoints experienced elevated errors, causing degraded performance for users. The issue affected console.anthropic.com, claude.ai, and api.anthropic.com, with occasional overload errors when making requests. The outage began at Jul 1, 2025 8:46 PM UTC and lasted about 1 hour and 7 minutes, ending when services returned to normal at 9:53 PM UTC. User reports started around 9:00 PM UTC, including at least one report from Australia noting an overload error at 9:01 PM UTC.